I grew up to believe that a healthy diet was essentially some type of low sugar cereal/porridge or eggs for breakfast, a sandwich on brown bread or a salad for lunch with some fruit and a homemade dinner with non processed meat/fish carbs and veg.
I also believed that a bit of freezer food, chocolate or a takeaway wasn't the work of the devil and was fine for a lazy weekend dinner once a week. Pretty much have your 5 a day at least and everything in moderation.
When I read on here I feel I'm in a parallel universe. Someone was criticising weetabix with banana as being too high in sugar, there's low carbs, ketosis, zero sugar, people claiming fruit has too much sugar. Someone on tv the other day was slagging off butter saying they'd never eat butter.